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// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-getownproperty-p
description: >
Throws a TypeError exception if resultDesc is both non-configurable and
non-writable, while targetDesc is writable.
info: |
[[GetOwnProperty]] (P)
...
17. If resultDesc.[[Configurable]] is false, then
...
b. If resultDesc has a [[Writable]] field and resultDesc.[[Writable]] is
false, then
i. If targetDesc.[[Writable]] is true, throw a TypeError exception.
...
features: [Proxy, proxy-missing-checks]
---*/
var trapCalls = 0;
var p = new Proxy({}, {
getOwnPropertyDescriptor: function(t, prop) {
Object.defineProperty(t, prop, {
configurable: false,
writable: true,
});
trapCalls++;
return {
configurable: false,
writable: false,
};
},
});
assert.throws(TypeError, function() {
Object.getOwnPropertyDescriptor(p, "prop");
});
assert.sameValue(trapCalls, 1);
reportCompare(0, 0);